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stereoscope; diagnostic test
Europe: United Kingdom, England, London
Black metal stereometer with double eyepiece, head rest. Three red rubber feet. Cloth eyepiece hood. Pointer. Nine curving stereogram cards. Two attention cards. Also a card depicting a seated man from "The Keystone Eye Comfort and Depth-Perception Series. Efficiency Record pad with purple cover. Red hardback manual. Contained in wooden crate with two clasps, sideways-sliding catch and steel-reinforced leather carrying handle.